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APPARATUS POR TREATING STEEL INGOTS.-

No. 294,233. l v A Patented Feb. 26.11884.

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G'. SNELUS i y ,APPARATUS PoR TREATING STEEL INGoTs. y

No. 294,283. i l Patented Feb. 26,-1884.

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UNITED STATES PATENT! OFFICE.

GEORGE JAMES SNELUS, OF WORKINGTON, ENGLAND.`

APPARATUS FOR TREATING:v STEEL IN'GOTS. d

SPECIFICATION forming part of Letters Patent Nuo. 94,283, dated February 26, 1884.

Application filed October 8, 1883. (No model.) Patented in England February 22, 18H3, No. 980.'

T all whom it may concern:

Be it known that I, GEORGE JAMES SNELUs, of Workington, England, metallurgical engineer, have invented new and useful Improvements in Apparatus for Treating Steel Ingots, (for which I have obtainedv a patent in Great Britain, No. 980, bearing date February 22, 1883,) of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to apparatus for treating steel ingots, to facilitate theoperation of rolling or otherwise working the same, and isv designed to imp rovewh at are knownas Gj ers soaking-pits 77-that'is to say, chambers or pits sunk in the ground-into which chambers or pits the steel ingots are put as soon as they are removed from the molds. The surplus heat which the ingots then contain is communicated to the sides of these pits, so that the excessively hot .central portion of the ingot cools, while the temperature of .the outside thereof is raised, and the ingot is thus caused to attain a uniform or approximately uniform temperature throughout, ditions of surplus heat transferred from the hot ingot to the pit-sides render the latter so hot that they in turn will impart heat to an ingot if the same happens to be of lower temperature than usual. By these means the Vingots are brought into a proper condition for rolling without the aid of any extraneous source of heat.

Heretofore the sides of these pits have been made of brick-work, and in using the said pits so constructed I have found that while the bottomof the pit becomes excessively hot, the top remains comparatively cool, and there is con-l heat than brick-work, conducts the surplus heat from the bottom of the pit to the top thereof, and, having a high melting-point, the

The successive ad-v said casing is not injured by the great heat in the pit. I usually employ a series of these steel casings, placed about nine inches apart,

the spaces between the casings being filled up openings in the said casings should be large `enough to leave a space of about an inch wide around the thickest ends of the ingots to be treated. The top of the steel casing or lining serves as-a rim upon which to place the inner lid or cover in order to inclose the ingot. A second iron casting with beveled edges is bolted to the top of the aforesaid viron casting to vreceive the outer covers, which may also be of cast-iron. Between the steel casings and the first iron casting and between the two iron castings I sometimes place layers consisting of a mixture of dre-clay and tar, about an inch thick, to form a non-conducting and close j oint. The fire-clay shouldbe dried, passed through a ne sieve, made red-hot, and then grou-nd with the tar, to mix them thoroughly and form a very stiff mass.

In the accompanying drawings Ihave shown how the said invention may be conveniently and advantageously carried into practice.

Figure l is a vertical section of a series 'of soaking-pits constructed according to my saidinvention, the said section 'being taken through the center of two of the saidpits. Fig. 2 is a plan of the same with some of thecovers removed, two of the pits being shown in horizontal section on the line x x, Fig. 1.

A represents the steel ingot; B B, the steel linings or casings of the pitsyC, the brickwork between and around the same; D, the

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` ly, or irrespeetively of the improvements hereY in set forth, a soaking-pit formed oi' brickwork, nor do I claim the treatment of steel ingots in the manner specified, but

That l1 claim is- 1. An apparatus for uniformly heating steel ingots, consisting, essentially, ot' a steel easing, B, sunk in the ground, a metallic frame secured over the upper end of the casing, and having an opening leading into the latter, un inner lid, H, for covering the upper open end of the easing, and an outer lid, F, for covering thc opening in the metallic frame, substantially as described.

2. The combination ot' the steel easing B, sunk in the ground, the metallic frames D and E, arranged over each other above the easing, and each having an opening, bolts connecting the two frames, an inner lid, H, for covering the upper end ofthe easing, and an outer lid,

F, for covering the opening in the upper ineY tallie frame, E, substantiallyT as described.

Y3. The combination of thersteel casing B, sunk in the ground, the metallic frames D and E, bolted together above the casing, and each having an opening through it, non-conductors arranged, respectively, between the two frames and between the easing and the lower frame, and lids H and F, for covering the upper end of the casing and the opening in the upper frame, substantially as described.

4. The combination of a series of steel casings, B, inclosed by brick-Work in the ground, a metallic frame secured over the casings, and having a series ofopeningsone for each of the latter-and lids H and F, for covering the upper ends of the casings and the openings inthe metallic frame, substantially as described.

5. The combination of a series oi' ,steel casings sunk in the ground and surrounded by brick-work, metallic frames D and E, bolted together above the casings, and each having a series of openings leading to the Casin gs, and

lids'I-l and F, for covering the upper ends 'of 5 5V the casings and the openings in the metallic frames, substantially as described.

6. The combination of a series of steel ings sunk in the ground, the brick-work C, surrounding the casings, the metallic frames D and E, attached one upon the other aboveA the casings, and cach having a series of openings leading to the latter, non-conducting layers interposed between the two metallic frames and between lthe brick-work, the casings, and the under traine, l), and lids H and F, for covering the upper ends of the casings and the openings in the top frame, E, substantially as described.

7. A soakingpit for uniformly heating s teel ingots, having an upright lining of steel, in coinbinatioil with thc metallic frames D and E, united by bolts. and having openings leading to the pit, and lids I-I and F, for 'covering the top of the pit-lining and the opening in the top frame, E, substantially as described.

In testimony whereof IY have hereunto signed my naine in the presence of' two subscribing witnesses.

GEORG-E JAMES SELUS.

lVituesses:

J onN ALBERT SALKDO, Cashier, 5 Clifton Terrace, ll'vorkinlr/toa.

HENRY lVYNN, Clerk, lVorfnlr/oa. 

